Piston for Energy Recovery Device of Reverse Osmosis Desalination Systems

摘要

The present invention relates to a piston for an energy recovery device of the reverse osmosis desalination system, wherein the piston for the energy recovery device of the reverse osmosis desalination system has two pistons connected to each other by a piston rod passing through a central block. It has the function of recovering the energy of the high pressure concentrated liquid exiting the desalination module while reciprocating the two inner cylinder surfaces separated and delivering it to the brine to be desalted, consisting of three separable pieces, and sealing material on the circumferential surface of the central engraving part. And, the circumferential surface of the left and right engraving portion includes a groove to be mounted, respectively. The piston for the energy recovery device of the reverse osmosis desalination system according to the present invention has a continuous sliding ability and excellent leakage preventing performance regardless of the thermal expansion of the stainless steel (SUS316) cylinder.